SCREENING OF TOMATO ACCESSIONS FOR RESISTANCE TO ...

genetic and physiological characterization of abiotic stress tolerance and for breeding purposes
(Scott, 1993), In addition, stress tolerance is a developmentally regulated, stage-specific
phenomenon; tolerance at one stage of plant development is often not correlated with tolerance at
other developmental stages (Asins et al., 1993; Foolad, 1999).
1.5 Objective:
To determine the resistance levels of different tomato varieties to Fusarium wilt
disease caused by Fusarium oxysporum f
sp. Iycopersici.
1.6 Justification:
Tomato varieties are susceptible to several diseases caused by pathogenic fungi,
bacteria or viruses. Different c?ntributions of modem plant breeding to tomato improvement have
been through development of cultivars with improved disease resistance. Hence the need to
determine the resistance level of different varieties of tomato to Fusarium caused by Fusarium
oxysporumfsp
lycopersici wilt disease in South West Nigeria.